A good Keystone State example.
This cap is the Pattern 1902 for enlisted men, and this particular cap is a private purchase had or perhaps a Pennsylvania State contract as the cap has Pa. state buttons, and bears the insignia of the “Keystone State 10 regiment of infantry, I believe their 2nd division (white enamel). Not knowing PA. regulations I do not know if the insignia is correct with this hat, it very well may be.
The blue wool is in excellent condition and seems to have no moth issues. The buff and blue dress cap band is excellent as well, and one tinny nip is toward the back side. Chinstrap and visor are fine, the visor leather as suffered under over heated conditions, but a typical occurrence, looks fine though.
The lining is fine + with some minor wear to the leather sweatband. Size 6 ¾. Overall an excellent example made by WM. H. HORTSMANN COMPANY,